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參數(shù)資料
| 型號： | CDP68HC68T1M2 |
| 廠商： | HARRIS SEMICONDUCTOR |
| 元件分類： | XO, clock |
| 英文描述： | CMOS Serial Real-Time Clock With RAM and Power Sense/Control |
| 中文描述： | 0 TIMER(S), REAL TIME CLOCK, PDSO16 |
| 文件頁數(shù)： | 11/24頁 |
| 文件大?。?/td> | 139K |
| 代理商： | CDP68HC68T1M2 |
11
Power Sense
This bit is used to enable the line input pin to sense a power
failure. It is set high for this function. When power sense is
selected, the input to the 50Hz to 60Hz prescaler is discon-
nected. Therefore, crystal operation is required when power
sense is enabled. An interrupt is generated when a power
failure is sensed and the power sense and Interrupt True bit
in the Status Register are set. When power sense is acti-
vated, a “0” must be written to this location followed by a “1”
to re-enable power sense.
Alarm
The output of the alarm comparator is enabled when this bit
is set high. When a comparison occurs between the sec-
onds, minutes and hours time and alarm counters, the inter-
rupt output is activated. When loading the time counters, this
bit should be set low to avoid a false interrupt. This is not
required when loading the alarm counters. See Pin Func-
tions, INT for explanation of alarm delay.
Periodic Select
The value in these 4 bits will select the frequency of the peri-
odic output. (See Table 2).
INTERRUPT CONTROL REGISTER (Write/Read) - Address 32H
D7
D6
D5
D4
D3
D2
D1
D0
WATCHDOG
POWER
DOWN
POWER
SENSE
ALARM
PERIODIC SELECT
NOTE: All bits are reset by power-on reset.
TABLE 2. PERIODIC INTERRUPT OUTPUT
D0 - D3 VALUE
PERIODIC INTERRUPT
OUTPUT FREQUENCY
FREQUENCY TIME BASE
XTAL
LINE
0
Disable
1
2048Hz
X
2
1024Hz
X
3
512Hz
X
4
256Hz
X
5
128Hz
X
6
64Hz
X
50 or 60Hz
X
7
32Hz
X
8
16Hz
X
9
8Hz
X
10
4Hz
X
11
2Hz
X
X
12
1Hz
X
X
13
Minute
X
X
14
Hour
X
X
15
Day
X
X
CDP68HC68T1
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相關代理商/技術參數(shù) |
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|---|---|
| CDP68HC68T1M296 | 功能描述:實時時鐘 PERIPH SPIAL-TIME- CLK 16W INDEL RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| CDP68HC68T1M296S2357 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| CDP68HC68T1M2Z | 功能描述:實時時鐘 PERI SPIAL-TIME-CLK RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| CDP68HC68T1M2Z96 | 功能描述:實時時鐘 PERI SPIAL-TIME-CLK RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| CDP68HC68T1M96 | 功能描述:實時時鐘 PERIPH SPIAL-TIME- CLK 20W INDEL RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
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